EP4330955A1 - Dispositif d'isolation acoustique d'un vitrage automobile - Google Patents
Dispositif d'isolation acoustique d'un vitrage automobileInfo
- Publication number
- EP4330955A1 EP4330955A1 EP22726496.7A EP22726496A EP4330955A1 EP 4330955 A1 EP4330955 A1 EP 4330955A1 EP 22726496 A EP22726496 A EP 22726496A EP 4330955 A1 EP4330955 A1 EP 4330955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thickness
- plate
- glazing
- acoustic insulation
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0815—Acoustic or thermal insulation of passenger compartments
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
Definitions
- TITLE ACOUSTIC INSULATION DEVICE FOR AUTOMOTIVE GLAZING
- the present invention relates to the sound insulation of glazing for a motor vehicle, and more particularly the sound insulation of side glazing.
- Vehicle glazing is subject to airborne noise during use of the vehicle.
- the transmission of this noise by the glazing degrades the acoustic comfort of a user.
- document EP 0844075 B1 describes laminated glazing comprising two sheets of mineral glass 6, the two sheets of glass 6 being separated by a first layer of polyvinyl butyral 14 (acronym PVB), an interlayer film 15 made of acoustic acrylic polymer, and a second layer of polyvinyl butyral 14.
- This glazing is designated by those skilled in the art by the terms “acoustic PVB glazing”.
- Such glazing makes it possible to increase sound insulation in a frequency range between 2000 Hz and 20000 Hz.
- such glazing entails high manufacturing costs.
- its manufacture can be complex with regard to other known glazings.
- such glazing is generally not chosen as the side glazing of the vehicle.
- An object of the invention is to propose a solution to allow a glazing to present a sound insulation greater than or equal to that of a known glazing, at least in a range of audible frequencies, while limiting the costs associated with the manufacture of such glazing.
- This object is achieved in the context of the present invention by means of a device for the sound insulation of a plate, comprising a sound insulation part and a mounting part,
- the mounting part being configured to be mounted fixed on an edge of the plate, the mounting part being mounted fixed to the sound insulation part and having a second thickness h 2 in contact with the sound insulation part,
- the acoustic insulation part being formed by a first material, and extending along a first length/in a first main direction, the acoustic insulation part having a first thickness hi of the first material in a perpendicular direction to the first principal direction, the first thickness hi varying, as a function of a coordinate x, along the first length / , proportionally to a value of x n , where n is a real number strictly greater than 1 , from a thickness minimum h 1min up to the second thickness h 2 , the first length / being predetermined so that the minimum thickness h 1min is less than or equal to one third of the second thickness h 2 .
- - n is a real number greater than or equal to 5/3 and preferably greater than or equal to 2
- - n is strictly less than 100, - the device comprises a side border, and the acoustic insulation part forms a thinning of the device from the mounting part to the side border, n preferably being a real number greater than or equal to 2, - the insulation part acoustic has at least one recess in the first material and n is preferably a real number greater than or equal to 5/3,,
- the recess has an elliptical and preferably circular shape
- the device comprises a viscoelastic heatsink, the heatsink being fixedly mounted in contact with at least a part of the acoustic insulation part, the heatsink being formed by a material having a first loss factor n 1 strictly greater than 0.05, in particular strictly greater than 0.10, and preferably strictly greater than 0.15, - the mounting part forms a housing capable of receiving an edge of the plate.
- the first material has a real part E′ 1 of the first Young's modulus, a first density pi, and a first Poisson's ratio vi
- the assembly part has a first phase velocity component yi of a wave of bending defined by the plate having a third thickness h 3 , a real part E' 2 of the second Young's modulus, a second density ⁇ 2 and a second Poisson's ratio v 2 , defining a second phase velocity component y 2 of a wave of bending defined by the difference between the first component y 1 and between the second component y 2 being less than 20% of the second component y 2 , and preferably being less than 10% of the second component y 2 .
- the plate is a glazing.
- the glazing comprises at least one sheet of mineral glass.
- the glazing is laminated glazing.
- the plate is a glazing comprising a sheet of mineral glass, and the first material of the device comprises aluminium, the second thickness being equal to the third thickness h 3 .
- the plate is a glazing comprising a sheet of mineral glass
- the first material of the device comprises a polymer material, the second thickness being strictly greater than the third thickness h 3 .
- Another aspect of the invention is a method of manufacturing an assembly comprising a device according to one embodiment of the invention, and a plate having a border, the method comprising a step of fixing the mounting part on a edge of the plate.
- FIG. 1 - Figure 1 schematically illustrates a known glazing having sound insulation properties
- FIG. 2 schematically illustrates a section of a device according to one embodiment of the invention, in which the device has a thinning from a mounting part of the device to a side edge of the device,
- FIG. 3 schematically illustrates a section of a device according to one embodiment of the invention, in which the device has a thinning from a mounting part of the device to a side edge of the device
- FIG. 4 schematically illustrates a section of a device according to one embodiment of the invention, the device having a recess
- FIG. 5 schematically illustrates a recess of a device according to one embodiment of the invention, in top view
- FIG. 6 schematically illustrates an assembly according to one embodiment of the invention, comprising a device and a plate, the device being mounted fixed to the plate,
- FIG. 7 schematically illustrates an assembly according to one embodiment of the invention, comprising a device and a plate, the device being mounted fixed to the plate,
- FIG. 8 schematically illustrates a side window of a motor vehicle according to one embodiment of the invention
- FIG. 9 schematically illustrates a side window of a motor vehicle according to one embodiment of the invention
- FIG. 10 is a diagram illustrating an average of the acceleration of known glazing and assemblies according to embodiments of the invention, as a function of the frequency of an incident acoustic wave
- FIG. 11 is a diagram illustrating acoustic insulation of known glazing and assemblies according to embodiments of the invention.
- the term "loss factor h" of a material means the material having a complex Young's modulus E, the ratio between the imaginary part E” of the Young's modulus of the material, associated with the elasticity of the material, and the real part E' of the Young's modulus of the material, associated with the viscosity of the material.
- the loss factor n of a material also called “tan d”, is defined by the international standard ISO 18437-2:2005 ( Mechanical vibration and shock — Characterization of the dynamic mechanical properties of visco-elastic materials — Part 2: Resonance method, part 3.2).
- the loss factor h can be defined for a predetermined frequency. It is meant herein by "a material has a first loss factor h greater than a value" that the material has a first loss factor h greater than the value for each of the frequencies in the audible frequency range, c' that is to say in a range of frequencies extending between 20 Hz inclusive and 20,000 Hz inclusive, and preferably between 20 Hz inclusive and 10,000 Hz inclusive.
- the loss factor h can be defined for a predetermined temperature.
- the temperature range considered in the present invention is between -20° C. and 60° C. It is meant herein by “a material has a first loss factor h greater than a value” that the material has a first loss factor n greater than the value for each of the temperatures between -20° C and 60° C.
- the real part E' of the Young's modulus of a material is greater than a value
- the real part E' of the Young's modulus of the material is greater than the real part E' of the Young's modulus of the material for each of the frequencies in the range of audible frequencies, that is to say in a range of frequencies extending between 20 Hz inclusive and 20,000 Hz inclusive, and preferably between 20 Hz inclusive and 10,000 Hz inclusive.
- the real part E' and the imaginary part E” of the Young's modulus can be defined for a predetermined temperature.
- the temperature range considered in the present invention is between -20° C. and 60° C.
- the term "the real part E' of the Young's modulus of a material is greater than a value” that the material has a real part E' of the Young's modulus greater than the value for each of the temperatures between -20°C and 60°C. h greater than a value” that the material has a first loss factor n greater than the value for each of the temperatures between -20° C and 60° C.
- a dynamic characterization of a material is carried out on a viscoanalyzer of the Metravib viscoanalyzer type, under the following measurement conditions.
- a sinusoidal stress is applied to the material.
- a measurement sample formed by the material to be measured consists of two rectangular parallelepipeds, each parallelepiped having a thickness of 3.31 mm, a height of 10.38 mm and a width of 6.44 mm.
- Each parallelepiped formed by the material is also designated by the term “shear specimen”.
- the excitation is implemented with a dynamic amplitude of 5 ⁇ m around the rest position, by traversing the range of frequencies between 5 Hz and 700 Hz, and by traversing a range of temperatures between -20° C and + 60°C.
- the viscoanalyzer makes it possible to subject each specimen (each sample) to deformations under precise conditions of temperature and frequency, and to measure the displacements of the specimen, the forces applied to the specimen and their phase shift, which makes it possible to measure rheological quantities characterizing the material of the specimen.
- the exploitation of the measurements makes it possible in particular to calculate the Young's modulus E of the material, and particularly the real part E' of the Young's modulus and the imaginary part E” of the Young's modulus of the material, and thus to calculate the tangent the loss angle (or loss factor) h (also denoted by tan d).
- a value of the real part E' of the Young's modulus and/or a loss factor h of a material are measured without the material being prestressed.
- “Glazing” is understood to mean a structure comprising at least one sheet of organic or mineral glass, preferably adapted to be mounted in a vehicle, preferably a motor vehicle.
- the glazing may comprise a single sheet of glass or else a multilayer glazed assembly, at least one layer of which is a sheet of glass.
- a glazing may comprise a glazed assembly.
- the glazed assembly includes at least one sheet of glass.
- the glass can be organic or mineral glass.
- the glass can be tempered.
- the glazed assembly is preferably laminated glazing.
- “Laminated glazing” means a glazed assembly comprising at least at least two sheets of glass and an intermediate film formed of plastic material, preferably viscoelastic, separating the two sheets of glass.
- the interlayer plastic film may comprise one or more layers of a viscoelastic polymer such as poly(vinyl butyral) (PVB) or an ethylene-vinyl acetate copolymer (EVA).
- the interlayer film is preferably standard PVB or acoustic PVB (such as single-layer or three-layer acoustic PVB).
- the acoustic PVB can comprise three layers: two external layers in standard PVB and an internal layer in PVB added with plasticizer so as to make it less rigid than the external layers.
- ellipse is meant a closed plane curve obtained by the intersection of a cone of revolution with a plane, provided that the latter intersects the axis of rotation of the cone or of the cylinder.
- the ellipse is a conic with an eccentricity strictly between 0 and 1.
- the ellipse is also the locus of the points whose sum of the distances to two fixed points, called foci, is constant.
- a device 1 for acoustic insulation of a plate 4 comprises an acoustic insulation part 2 and a mounting part 3.
- the assembly part 3 is mounted fixed to the acoustic insulation part 2.
- the assembly part 3 and the acoustic insulation part 2 form a single monolithic part formed from the same first material.
- the mounting part 3 has a second thickness h 2 in contact with the acoustic insulation part 2.
- the device 1 extends along a main direction 6.
- the thickness of the mounting part 3 is constant and is equal to the second thickness h 2 along the main direction 6.
- the mounting part 3 is configured to be mounted fixed on a border of the plate 4.
- the border of the plate can be a slice of the plate 4.
- the border of the plate can be perpendicular to the main direction 6, so that the main direction 6 is parallel to a surface along which the plate 4 extends.
- the acoustic insulation part 2 is formed by the first material.
- the acoustic insulation part 2 extends along a first length / according to the first main direction 6.
- the acoustic insulation part 2 has a first thickness hi of the first material, according to a direction perpendicular to the first main direction 6.
- the first thickness hi varies, as a function of a coordinate x, along the first length / , proportionally to a value of x n , where n is a real number strictly greater than 1 , from a minimum thickness h 1min up to 'to the second thickness h 2 , the first length / being predetermined so that the minimum thickness h 1min is less than or equal to one third of the second thickness h 2 .
- the coordinate x is equal to zero when the thickness hi of the acoustic insulation part 2 is equal to h 2min .
- the thickness hi of the sound insulation part 2 is equal to the thickness h 2 of the mounting part 3.
- the device 1 makes it possible to receive the bending waves propagating from the edge of the plate 4 without reflecting them towards the plate 4.
- the bending waves propagating, once transmitted to the device 1, first in the mounting part 3 and then in the acoustic insulation part 2.
- the acoustic insulation part 2 prevents the reflection of bending waves in the device 1, which makes it possible to acoustically isolate plate 4 when device 1 is mounted fixed on plate 4.
- the first thickness hi of the acoustic insulation part 2 can be defined by the following formula (1): where e is a proportionality factor.
- the phase velocity C bi of the bending waves in the sound insulation part 2 can be defined as a function of the thickness hi(x) of the sound insulation part by the following formula (2): where E'i is the real part of Young's modulus of the first material, pi is the density of the first material, vi is the Poisson's ratio of the first material, hi(x) is the thickness of the sound insulation part at the x and w coordinate is the pulsation of the incident acoustic wave.
- the term “acoustic black hole” designates the acoustic insulation part 2.
- the device 1 comprises at least one acoustic black hole.
- Device 1 can also comprise a plurality, and preferably an array, of acoustic black holes.
- the first length / is predetermined so that the minimum thickness h 1min is less than or equal to one third of the second thickness h 2 .
- the first length / is predetermined so that the minimum thickness h 2 min is less than or equal to one fifth of the second thickness h 2 .
- the first length / is predetermined such that the minimum thickness h 1 min is less than or equal to one tenth of the second thickness h 2 .
- n can be strictly less than 100, so as to avoid a reflection at the junction between the acoustic insulation part 2 and the mounting part 3.
- the acoustic insulation part 2 can have, in a second main direction 16, a size greater than or equal to the first length / , the second main direction 16 being locally perpendicular to the first main direction 6 and perpendicular to a direction along which the thickness of the device 1 extends locally.
- the device 1 may comprise a side edge 9, the acoustic insulation part 2 forming a thinning of the device 1 from the mounting part 3 to the lateral border 9.
- n is a real number greater than or equal to 2.
- the acoustic insulation part 2 thus forms a blade or an edge extending along the second main direction 16.
- the acoustic insulation part 2 being in the second main direction 16 over a length greater than or equal to the first length /.
- the sound insulation part 2 may have at least one recess 7.
- n is a real number greater than or equal to 5/3.
- the recess 7 has a minimum size W min , depending on the surface in which the plate 4 extends, greater than or equal to the first length /.
- the recess 7 may have an elliptical shape, and preferably a circular shape.
- An ellipse formed by the recess 7 may have a minimum radius r min .
- the minimum radius r min of the ellipse is greater than or equal to the first length /.
- the recess 7 can also have a square or rectangular shape. Referring to Figure 4 and Figure 5, an opening 17 can be formed in the center of the recess 7.
- a sound insulation part 2 having the minimum thickness h 1min can be manufactured so that the minimum thickness h 1min is as close as possible to zero thickness, which makes it possible to minimize the reflection of a bending wave propagating in the device 1 and thus to increase the acoustic insulation of the plate 4.
- the first length / is greater than the difference between the radius r or the minimum radius r min of the recess 7 and the radius of the opening.
- the acoustic insulation part 2 can have different shapes.
- the first material may form an edge at the lateral edge 9 of the acoustic insulation part 2.
- the material may have a forked cut, the acoustic insulation part 2 forming two edges at the edge of the part sound insulation 2.
- the first thickness hi can be, in this case, measured by adding the thicknesses of each of the branches of the fork.
- the material can form a recess 7.
- the material can also form a cavity.
- the first thickness hi of the acoustic insulation part 2 is measured by adding the thicknesses of the material forming the cavity.
- the acoustic insulation part 2 can also extend along a curved surface. In this case, the measurement of the first thickness hi of the acoustic insulation part 2 is implemented by measuring the thickness of the material in a direction locally perpendicular to the curved surface.
- Viscoelastic heat sink 8 With reference to FIG. 2, FIG. 3 and FIG. 4, device 1 may comprise a viscoelastic heat sink 8.
- the heatsink 8 can be mounted fixed in contact with at least a part of the acoustic insulation zone 11.
- the heatsink 8 can be formed by a material having a first loss factor n 2 strictly greater than 0.05, in particular strictly greater than to 0.10, and preferably strictly greater than 0.15.
- n 2 first loss factor
- the material of the dissipator 8 is viscoelastic, and can have a real part E′ of the Young's modulus of less than 100 MPa, and preferably less than 10 MPa.
- the dissipator 8 can be mounted fixed on a part of the acoustic insulation zone 11 having a thickness comprised between h 1min and h 2 l2.
- the bending waves are dissipated by the dissipator 8 at the place where they are most concentrated.
- a part of the dissipator 8 is in contact with the acoustic insulation part 2 having the minimum thickness h 1 min .
- the dissipator 8 can be formed by a material chosen from a silicone, a nitrile and a polyurethane.
- the viscoelastic properties of known materials can be measured by the methods described herein.
- the heatsink material may have a glass transition temperature of between -80°C and -50°C inclusive.
- the heatsink material may comprise a methyl vinyl silicone (MVQ) crosslinked with benzoyl peroxide.
- MVQ methyl vinyl silicone
- the heatsink material can also be a porous material.
- the loss factor of the material can also be adjusted by a tackifying agent, for example a glycerine ester, calcium carbonate or carbon nanotubes.
- the polyurethane sealant Weberseal PU 40 (registered trademark) of the Weber brand has a loss factor n equal to 0.41 and a value of the imaginary part E′ of the Young's modulus equal to 7.2 MPa.
- the polyurethane sealant Sikaflex PRO-11 FC (registered trademark) of the Sika brand has a loss factor 77 equal to 0.20 and a value of the imaginary part E' of the Young's modulus equal to 1.2 MPa.
- the mounting part 3 is configured to be mounted fixed on a border 11 of the plate 4.
- the mounting part 3 comprises a termination capable of being mounted fixed on the border 11.
- the mounting part 3 can form a housing 10 adapted to receive the edge 11 of the plate 4.
- the housing 10 can form a clamp configured to surround the edge 11.
- the housing 10 can be in contact with an edge of the plate 4 and at the same time with an upper face and a lower face of the plate 4.
- the device 1 can be mounted fixed to the plate 4 without having any degree of freedom in rotation and in translation with respect to the plate 4.
- This configuration makes it possible to effectively transmit the bending waves from the plate 4 to the device 1.
- a termination of the mounting part 3 can also be glued to the border 11.
- the mounting part 3 can also be configured to be removably fixed mounted to the plate 4.
- An assembly 13 comprises a device 1 and a plate 4 having a border 11, in which the mounting part 3 is fixedly mounted on the border 11 of the plate 4.
- the plate 4 has a third thickness h 3 at the border 11
- the third thickness h 3 is preferably constant in the plate 4.
- One aspect of the invention is a method of manufacturing the assembly 13.
- the method comprises a step of fixing the mounting part 3 to an edge of the plate 4.
- the mounting part 3 can be recessed, clipped or removably mounted on the edge of the plate 4.
- the assembly part 3 can also be glued on the edge of the plate 4.
- the glue can be chosen from at least one single or multi-component structural glue, of the type epoxy, methacrylate, polyurethane, acrylic, vinyl.
- the difference between a first phase speed C bi of the bending waves in the assembly part 3 and between a second phase speed C b2 of the bending waves in the plate 4 is less than 20% of the second speed of phase C b2 , and preferably is less than 10% of the second phase speed C b2 during the exposure of the plate 4 to an acoustic wave of determined pulsation w.
- the first phase velocity C bi of the bending waves in the mounting part 3 is defined by the following formula (3): where w is a pulsation of the incident acoustic wave at plate 4, and gi is a first phase velocity component defined by the following formula (4): where E' 1 is the real part of the first Young's modulus of the first material, pi is a first density of the first material, and vi a first Poisson's ratio of the first material.
- the second phase velocity C b2 of the bending waves in plate 4 is defined by the following formula (5): where w is a pulsation of the incident acoustic wave at plate 4, and y 2 is a first phase velocity component defined by the following formula (4): where E' 2 is the real part of the second Young's modulus of the material of the plate 4, ⁇ 2 is a second density of the material of the plate 4, and v 2 is a second Poisson's ratio of the material of the plate 4.
- the relationship described above between the phase velocities of the bending waves can thus be expressed as follows: the difference between the first component yi and between the second component y 2 is less than 20% of the second component y 2 , and preferably is less than 10% of the second component y 2 .
- the reflection a bending wave propagating from the plate 4 towards the device 1 can be limited or canceled.
- the plate 4 is a glazing 12.
- the machining of a glazing 12 is a complex and expensive operation. In particular, machining an acoustic black hole can be complex, especially because of the profile of the part Acoustic black hole sound insulation 2.
- the glazing 12 comprises at least one sheet of mineral glass. Indeed, a sheet of mineral glass may be required in many types of glazing 12, although it is difficult to machine. Glazing 12 can be laminated or monolithic glazing.
- the first material may be aluminum, and the second thickness h 2 is equal to the third thickness h 3 .
- the real part of the Young's modulus E' 1 , the Poisson's ratio vi and the density pi of aluminum allow, with regard to the real part of the Young's modulus E' 1 , the Poisson's ratio v 2 and of the density ⁇ 2 of the mineral glass, to verify the relationship between the first component yi and the second component y 2 for a second thickness h 2 equal to a third thickness h 3 .
- the first material may be a polymer material, preferably resin, and the second thickness h 2 is strictly greater than the third thickness h3.
- the real part of the Young's modulus E' 1 , the Poisson's ratio vi and the density ⁇ 1 of the polymer materials allow, with regard to the real part of the Young's modulus E' 1 , the Poisson's ratio v 2 and of the density pi of the mineral glass, to verify the relationship between the first component yi and the second component Y 2 for a second thickness h 2 strictly greater than a third thickness h 3 .
- the plate 4 can also be chosen from a ceiling and a partition, preferably a gypsum partition. Thus, it is possible to improve the acoustic insulation of a ceiling or a partition without modifying them.
- the glazing 12 may be a side window 12 of a motor vehicle.
- the assembly 13 comprises means for fixing to a door of the motor vehicle, so that the device 1 is arranged in the door outside the belt portion when the assembly 13 is fixed to the door.
- the device 1 is configured to be arranged under a weatherstrip of the door.
- the acoustic insulation part 2 can form a thinning of the device 1 from the mounting part 3 up to the side edge 9.
- the acoustic insulation part 2 can include a network of recesses 7 in the first material.
- FIG. 10 illustrates an average of the acceleration of a pane 12 along a direction along the thickness of the pane 12, as a function of the frequency of an acoustic wave incident on the pane 12.
- the pane 12 is made of mineral glass.
- the glazing 12 has a thickness equal to 4 mm, a length along the main direction 6 equal to 300 mm and a width equal to 60 mm.
- Curve (a) illustrates an average of the acceleration of glazing 12 in the absence of device 1.
- Curve (b) illustrates an average of the acceleration of glazing 12, glazing 12 being mounted fixed to a device 1 according to an embodiment of the invention, in resin, in the absence of heatsink 8.
- Curve (c) illustrates an average of the acceleration of the glazing 12, the glazing 12 being mounted fixed to a device 1 according to a mode of embodiment of the invention, in resin, comprising a dissipator 8.
- FIG. 11 illustrates a digital simulation by the finite element method of acoustic insulation of a glazing 12, as a function of the frequency of an incident acoustic wave.
- Curve (d) illustrates acoustic insulation of laminated glazing 12, comprising a damping layer having a loss factor equal to 1%, in the absence of device 1 .
- Curve (e) illustrates acoustic insulation of a laminated glazing 12, comprising a damping layer having a loss factor equal to 15%, in the absence of device 1.
- Curve (f) illustrates acoustic insulation of a laminated glazing 12, comprising a damping layer having a loss factor equal to 1%, the glazing 12 being mounted fixed to a device 1 made of aluminium.
- Curve (g) illustrates an acoustic insulation of a laminated glazing 12, comprising a damping layer having a loss factor equal to 1%, the glazing 12 being mounted fixed to a device 1 made of resin.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Joining Of Glass To Other Materials (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2104522A FR3122519B1 (fr) | 2021-04-29 | 2021-04-29 | Dispositif d'isolation acoustique d'un vitrage automobile |
| PCT/FR2022/050836 WO2022229582A1 (fr) | 2021-04-29 | 2022-04-29 | Dispositif d'isolation acoustique d'un vitrage automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4330955A1 true EP4330955A1 (fr) | 2024-03-06 |
Family
ID=77021447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22726496.7A Pending EP4330955A1 (fr) | 2021-04-29 | 2022-04-29 | Dispositif d'isolation acoustique d'un vitrage automobile |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20240217456A1 (fr) |
| EP (1) | EP4330955A1 (fr) |
| KR (1) | KR20240004443A (fr) |
| CN (1) | CN115552513A (fr) |
| BR (1) | BR112023021775A2 (fr) |
| CA (1) | CA3216305A1 (fr) |
| FR (1) | FR3122519B1 (fr) |
| WO (1) | WO2022229582A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240082057A (ko) * | 2022-12-01 | 2024-06-10 | 한국과학기술원 | 음향 블랙홀을 이용한 층간 소음 저감 패널 |
| CN117145925A (zh) * | 2023-09-07 | 2023-12-01 | 广东电网有限责任公司 | 振动吸取装置 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1027029B (it) * | 1974-01-29 | 1978-11-20 | Guaverbel Mecaniver | Vetrata laminata |
| FR2529609A1 (fr) * | 1982-07-05 | 1984-01-06 | Saint Gobain Vitrage | Vitrage multiple a proprietes d'isolation thermique et acoustique |
| US4810583A (en) * | 1985-12-19 | 1989-03-07 | Ppg Industries, Inc. | Aircraft windshield |
| DE69715567T3 (de) | 1996-11-26 | 2016-08-04 | Saint-Gobain Glass France S.A. | Verwendung einer Verbundglasscheibe zur Dämmung von durch Festkörper geleiteten Schwingungen in einem Fahrzeug |
| US5965853A (en) * | 1997-03-31 | 1999-10-12 | Ppg Industries Ohio, Inc. | Sound absorbing aircraft transparency and method of making same |
| FR2901174B1 (fr) * | 2006-05-19 | 2013-01-11 | Saint Gobain | Vitrage feuillete acoustique, intercalaire acoustique et procede de selection de l'intercalaire pour un amortissement acoustique optimal |
| EP1932757B1 (fr) * | 2006-12-15 | 2016-10-26 | Airbus Deutschland GmbH | Cadre de fenêtre en aluminium fixé sur un revêtement de fuselage en laminé fibre métal |
| JP5441833B2 (ja) * | 2009-07-03 | 2014-03-12 | 日東電工株式会社 | ドアホールカバーおよび車両のドア構造 |
| WO2015069339A2 (fr) * | 2013-08-06 | 2015-05-14 | Ppg Industries Ohio, Inc. | Hublot d'avion déformable |
| US9630575B2 (en) * | 2015-09-30 | 2017-04-25 | GM Global Technology Operations LLC | Panel assembly with noise attenuation system |
| CN106023974B (zh) * | 2016-05-23 | 2019-10-22 | 南京航空航天大学 | 非完美声学黑洞截面构造 |
| CN106023978B (zh) * | 2016-05-23 | 2019-08-02 | 南京航空航天大学 | 双层板声学黑洞减振降噪结构 |
| DE102016116554B3 (de) * | 2016-09-05 | 2017-12-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Schalldämpfende Wand mit einem Fensterkomplex und Flugzeug mit einer solchen Wand |
| EP3412512B1 (fr) * | 2017-06-07 | 2021-06-02 | Illinois Tool Works Inc. | Bouchon acoustique à amortissement amélioré |
| US11979951B2 (en) * | 2019-10-10 | 2024-05-07 | Gentex Corporation | Anti-condensation assembly |
| CN111561252A (zh) * | 2020-04-01 | 2020-08-21 | 同济大学 | 一种宽频通风隔声窗单元结构及其应用 |
| CN111851332A (zh) * | 2020-07-02 | 2020-10-30 | 华东交通大学 | 一种基于声学黑洞的轨旁声屏障 |
| CN111862921B (zh) * | 2020-08-31 | 2024-08-06 | 裘天政 | 一种附加式偏心声学黑洞减振结构 |
| CN112581928B (zh) * | 2020-12-15 | 2022-09-02 | 哈尔滨工程大学 | 一种降噪用的声学黑洞周期夹芯梁结构 |
| JP7617049B2 (ja) * | 2022-01-25 | 2025-01-17 | トヨタ紡織株式会社 | 乗物室防音構造 |
-
2021
- 2021-04-29 FR FR2104522A patent/FR3122519B1/fr active Active
-
2022
- 2022-04-29 CA CA3216305A patent/CA3216305A1/fr active Pending
- 2022-04-29 US US18/557,702 patent/US20240217456A1/en active Pending
- 2022-04-29 CN CN202280004166.3A patent/CN115552513A/zh active Pending
- 2022-04-29 KR KR1020237037878A patent/KR20240004443A/ko active Pending
- 2022-04-29 BR BR112023021775A patent/BR112023021775A2/pt unknown
- 2022-04-29 EP EP22726496.7A patent/EP4330955A1/fr active Pending
- 2022-04-29 WO PCT/FR2022/050836 patent/WO2022229582A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022229582A1 (fr) | 2022-11-03 |
| CA3216305A1 (fr) | 2022-11-03 |
| FR3122519B1 (fr) | 2026-03-13 |
| US20240217456A1 (en) | 2024-07-04 |
| CN115552513A (zh) | 2022-12-30 |
| BR112023021775A2 (pt) | 2023-12-26 |
| FR3122519A1 (fr) | 2022-11-04 |
| KR20240004443A (ko) | 2024-01-11 |
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